21 years old female who provided us medical report of her endocrinological examination with diagnosis of “Basedow’s Hyperthyroidism in autoimmune non-nodular thyroid (Hashimoto’s thyroiditis). Under therapy with Tapazole at the dosage of 2 tablets daily with FT3 and FT4 values within normal limits and TSH=0.00” . In the light of such values and of the clinical picture, the specialist confirmed the current therapy with Tapazole (2 tablets daily) suggesting therapeutic dosage of 131 Iodine after examination at nuclear medicine department.